Question/Issue:
You use Symantec AntiVirus 10.1.4000 or later and the Thunderbird email program. After Symantec AntiVirus detects an infected email message in Thunderbird, duplicate copies of subsequent messages appear in the Thunderbird inbox. Some messages may display with with headers and additional SMTP data.


Solution:
This problem happens because Symantec AntiVirus 10.1.4000 and later remove the infected message but cannot update the Thunderbird index file. To fix the problem, close Thunderbird and then delete the Inbox.msf file. Thunderbird re-creates the Inbox.msf file when you open Thunderbird again.

If the problem happens with a message in a folder other than inbox, delete the .msf file that corresponds to that folder.

Technical Information:
Symantec AntiVirus saves a copy of the entire inbox in Quarantine or in Backup Items each time that Auto-Protect or a manual scan detects an infected email message. If you receive many infected messages, these copies of the inbox file can take up a large amount of disk space.



References:
For help with earlier versions of Symantec AntiVirus, read Netscape, Mozilla, or Outlook Express Inbox is quarantined when infected email is detected.

Document ID: 2006062615195248
Last Modified: 07/05/2006
Date Created: 06/26/2006
Operating System(s): Windows 2000, Windows XP Home, Windows XP Professional Edition, Windows XP Tablet PC, Windows XP 64-Bit Edition 2003, Windows Server 2003 32-bit Edition, Windows Server 2003 64-bit Edition, Windows XP Media Center Edition 2005
Product(s): Symantec AntiVirus 10.1, Symantec Client Security 3.1
Release(s): Symantec AntiVirus 10.1, Symantec Client Security 3.1